B3Design basis

B3.1 Required Strength

The required strength of structural members and connections shall be the greater of the following:

• (a) The required strength as determined by structural analysis for the applicable load combinations, as stipulated in the applicable building code, and in Chapter C
• (b) The required strength given in Chapters D, E, F, G, and H

B3.2 Available Strength

The available strength is stipulated as the design strength, $\phi R_{n}$, for design in accordance with the provisions for load and resistance factor design (LRFD) and the allowable strength, $R_{n} / \Omega$, for design in accordance with the provisions for allowable strength design (ASD). The available strength of systems, members, and connections shall be determined in accordance with the Specification, except as modified throughout these Provisions.